Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:02:59 2012 Optimize a model with 8550 rows, 13110 columns and 38304 nonzeros Presolve removed 29 rows and 3306 columns Presolve time: 0.16s Presolved: 8521 rows, 9804 columns, 34998 nonzeros Variable types: 0 continuous, 9804 integer (9804 binary) Found heuristic solution: objective 32.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 7316 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 68 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 164 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 156 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 156 3.00000 2.00000 33.3% - 9s 0 0 2.00000 0 154 3.00000 2.00000 33.3% - 15s 0 0 2.00000 0 208 3.00000 2.00000 33.3% - 18s 0 0 2.00000 0 68 3.00000 2.00000 33.3% - 20s 0 0 2.00000 0 156 3.00000 2.00000 33.3% - 24s 0 0 2.00000 0 154 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 207 3.00000 2.00000 33.3% - 34s 0 0 2.00000 0 207 3.00000 2.00000 33.3% - 35s 0 2 2.00000 0 207 3.00000 2.00000 33.3% - 39s 2 3 2.00000 1 207 3.00000 2.00000 33.3% 6262 40s 5 5 2.00000 1 68 3.00000 2.00000 33.3% 2505 47s 6 6 2.00000 1 68 3.00000 2.00000 33.3% 2088 51s 7 6 2.00000 1 68 3.00000 2.00000 33.3% 1789 57s 8 7 2.00000 1 68 3.00000 2.00000 33.3% 1566 62s 9 8 2.00000 1 68 3.00000 2.00000 33.3% 1392 68s 12 10 infeasible 11 3.00000 2.00000 33.3% 14050 71s Cutting planes: Gomory: 9 Zero half: 7 Explored 14 nodes (387220 simplex iterations) in 71.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%